TROUBLE SHOOTING GUIDE
Following the procedure below to check if the oven is defective or not.
1)Check earthing before trouble checking.
2)Be careful of the high voltage circuit.
3)Discharge the high voltage capacitor.
4)When checking the continuity of the switches, fuse or high voltage tranformer, disconnect one load wire from these parts and check continuity with the AC plug removed. To do otherwise may result in a false reading or damage to your meter.
NOTE : When electric parts are checked, be sure the power cord is not inserted the wall outlet.
Check wire harness, wiring and connected of the terminals and power cord before check the parts listed below.
(TROUBLE 1) Oven does not operate at all : any inputs can not be accepted.
CONDITION
Fuse blows.
CHECK |
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Check continuty of interlock |
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| Continuity |
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monitor switch with door closed |
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(COM ↔ NC) |
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| No Continuity |
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CAUSE
Malfunction of interlock monitor switch
REMEDY
Replace
NOTE 1
Check continuity of both | No Continuity |
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primary and secondary | Malfunction of | |
interlock switch with door |
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colosed | Continuity | interlock switch |
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Replace
NOTE 1
Check continuity of primary 
interlock switch contact with door
partially open until interlock monitor switch contact close (COM ↔ NC)
Check continuity of primary winding of low voltage transformer
Continuity
0Ω or infinite 
Approx.
150~310
(normal)
Shorted contacts of primary interlock switch.
Defective low voltage transformer
Replace
NOTE 1
Replace
Disconnect high voltage fuse |
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and operate the unit |
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| transformer |
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Replace
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